Wednesday, September 30, 2009

M22

Messier 22 (also known as M22 or NGC 6656) is an elliptical globular cluster in the constellation Sagittarius near the Galactic bulge region. It is one of the brightest globulars that is visible in the night sky. It contains roughly 70,000 stars and is one of the nearer globular clusters to Earth at a distance of about 10,600 light-years away.

Picture was taken with my Canon Powershot camera optics only, no scope. Stacked with Deep Sky Stacker and resized for posting, image is otherwise unedited.

Stack: 58 light frame JPEGs, in-camera dark subtraction
ISO speed rating: 1600
Shutter speed: 15.0 sec
Aperture: f/4.3
Zoom 10x (Focal length): 330mm (equiv.)*
Exposure bias: +0.0 EV
Original image size: 1600 x 1200 Pixels
Flash used: No
Date taken: Friday, June 26, 2009
Time taken: 11:23 PM
Camera make: Canon
Camera model: Canon PowerShot SX100 IS

- Quads, hailing from Grand Marsh Observatory atop Elk Castle Hill

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